Trechispora mollusca
Family Hydnodontaceae · Updated October 2026
97US records
25states
Augbusiest month
97 US records since 1877 (12 in the last 10 years)
Last seen Sep 29, 2023 (about 3 years ago) near Crown, Clarion County, PA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New York, New Jersey and Michigan, and the busiest months are Aug, Sep and Nov. (Data as of October 26, 2026; records can lag by weeks.)
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
Lookalike warning. Many mushrooms, including deadly ones, closely resemble each other, and the only reliable identification comes from an expert looking at the actual specimen (often with spore prints or microscopy). Never use a name, photo or record count on this page to decide what something is.
When it's recorded
Records by month, all years. Busiest: Aug, Sep, Nov.
Where it's recorded
Top counties
- Gloucester County, NJ (8) · latest Mar 31, 1894
- Onondaga County, NY (8) · latest Nov 23, 1957
- Benzie County, MI (5) · latest 1908-08
- Dane County, WI (5) · latest 1916-09
- Montezuma County, CO (3) · latest Nov 20, 1987
- Morgan County, IN (3) · latest 1903-06
- Pierce County, WA (3) · latest 1906-04
- Avery County, NC (3) · latest Sep 10, 1901
- Mercer County, NJ (2)
- St. Martin Parish, LA (2) · latest Jan 12, 1899
More on this species from GBIF.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.